Five of Colorado’s largest school districts have investigated more than 400 threats by students this school year and put 40 of them at the highest levels of concern, but Arapahoe High School officials still won’t say if a threat made by gunman Karl Pierson in September prompted the district’s highest security response.

When 17-year-old Antoinette Parks announced she was pregnant, her boyfriend was furious. She refused to have an abortion and was later found dead in a trash bin not far from her boyfriend’s house, stabbed 23 times. Denver Post reporter Kirk Mitchell explores why this cold case remains unsolved 33 years later.

The owners of Boulder’s Sterling University Peaks apartments, who this summer were cited for illegally subdividing 92 bedrooms in the complex, have reached an agreement to settle the case for $410,000, the city announced Thursday.